CWCheat for psx games...........?

Is there a CWCheat for psx converted/eboot/games or any thing like the CWCheat that works? I have cwcheat but no cheats come up for my games ? Ok so I looked through the form and saw this :

I downloaded the latest version of cwcheat and installed it. The menu pops up for psp games but will not for my PSX game. Ive tried doing it with the cwcheat for psp disabled with cwcheatpops.prx enabled but nota.